M-QAMsimulink

It is mainly used for ARQ simulation ,such as stop-and-wait

A brief Introduction to Wireless Sensor network for Beginners.

Meta 1 MMU handling code.

说明：  用TCP获得网路标准时间来设定您的PC时钟(Set your PC clock with TCP to get network standard time)

实现物理层网络编码的仿真，此为无信道编码环境下实现的(network coding)

这是在PC端使用S7 M SC om M控制,在S - 200 C侧使用免费的PI端口通信,实现他们之间的信息交换,来创建一个简单的分布式控制系统。1 s7 - 200系列P LC自由端口通信方式 (This is in the PC End use of 7 M SC om M controls, in S- 200 PI C side using the free port Communication, realize the information exchange between their, to construct a simple Distributed control system. 1 S7-200 series P LC free port communication way)

用于检测手机麦克风输入音量大小的DEMO(it s used to detect the volume of phones micphone)

此程序是c语言的有关LDPC译码仿真程序,很有用,LDPC的译码仿真可能对朋友有帮助()

说明：  单频信号实现频率估计，经典算法MRIFE(frequency estimation)

（1） 分析QPSK调制、解调原理，并画出其系统框图； （2） 产生等概率且相互独立的二进制序列，作为待传输的信号，并画出其波形； （3） 进行8PSK调制，分别画出I、Q两支路信号经过乘法器后的波形以及8PSK调制波形； （4） 产生均值为0，方差为1的加性高斯随机噪声，画出其时域波形及频谱； （5） 将加性高斯随机噪声作为传输信道的干扰，画出接收端信号的时域图； （6） 进行8PSK解调，输出解码序列，画出解调后信号波形； （7） 计算系统信噪比、传输误码率。((1) analysis of QPSK modulation, demodulation, and draw the system block diagram (2) have equal probability and independent binary sequence as a signal to be transmitted, and draw the waveform and (3) 8PSK modulation, Draw the I, Q two way signal multiplier waveform and 8PSK modulation waveform (4) to produce zero mean and variance of an additive Gaussian random noise, to draw the time-domain waveform and spectrum ( 5) the additive Gaussian random noise interference as a transmission channel, to draw the time-domain diagram of the receiver signal (6) 8PSK demodulator output decoding sequence, draw the demodulation of the signal waveform computing system (7) signal-to-noise ratio, the transmission bit error rate.)